CN1799499A - Coil rotation positioning device of magnetic resonance imaging equipment - Google Patents
Coil rotation positioning device of magnetic resonance imaging equipment Download PDFInfo
- Publication number
- CN1799499A CN1799499A CNA2004100823804A CN200410082380A CN1799499A CN 1799499 A CN1799499 A CN 1799499A CN A2004100823804 A CNA2004100823804 A CN A2004100823804A CN 200410082380 A CN200410082380 A CN 200410082380A CN 1799499 A CN1799499 A CN 1799499A
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- China
- Prior art keywords
- positioning device
- rotation
- rotation positioning
- drive division
- rotation section
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
- G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
- G01R33/32—Excitation or detection systems, e.g. using radio frequency signals
- G01R33/34—Constructional details, e.g. resonators, specially adapted to MR
- G01R33/34046—Volume type coils, e.g. bird-cage coils; Quadrature bird-cage coils; Circularly polarised coils
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/05—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves
- A61B5/055—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves involving electronic [EMR] or nuclear [NMR] magnetic resonance, e.g. magnetic resonance imaging
Abstract
The invention provides a rotational locating device applied in the coil of magnetic resonance imaging device, the coil comprising an accommodating cavity for pre-checked component, the said rotational locating device comprising a cushion which can rotate freely in the said accommodating cavity, the cushion is equipped with the first driving component and the first rotating component; while the second driving and rotating component are equipped in coil; the first and second driving component forms the transmission countershaft, the first rotating component rotates relatively with the second rotating device being driven by the first and second driving component, the second driving component is driven artificially or by connecting with external driving source and thus drives the first driving component, through which driving the cushion to rotate through the cooperation of the first and second rotating component, and at the same, controlling the quantitative rotating angle and course of the cushion rotating through rational configuration of the first and second driving component position and size.
Description
(1) technical field
The present invention relates to a kind of nuclear magnetic resonance (Magnetic Resonance Imaging; MRI) positioner of equipment coil (coil) is more specifically to a kind of rotation positioning device of MR imaging apparatus coil.
(2) background technology
Mr imaging technique has become medically important instrument of radiodiagnosis in recent years.Nuclear magnetic resonance is to utilize wireless radiofrequency electric wave (Radio Frequency; RF) as exciting, with the atomic nucleus of observing particular types under powerful magnetostatic field, the magnetic moment variable signal that is sent to the process that restores balance from the back that is disturbed.Utilize Faraday's law that this magnetic moment variable signal is converted to the signal of telecommunication, and try to achieve the image of atomic density original in the object via two-dimension fourier conversion (two dimensional Fourier transform) computing.
The use magnetic resonant imaging examination has the following advantages:
1) in existing Medical Imaging means, the soft tissue contrast resolution of nuclear magnetic resonance is the highest, it can clearly differentiate soft tissues such as muscle, tendon, fascia, fat, distinguishes the endocardium of higher signal, cardiac muscle and the visceral pericardium under high signal fat sets off and the pericardium of low signal of msp signal;
2) nuclear magnetic resonance has the ability that any direction is directly cut layer, and needn't change those who are investigated's position, the layer of cutting in conjunction with different directions, can show the structure that is examined organ or tissue comprehensively, there is not the dead angle of observation, in recent years the volume scan of Application and Development, the real-time reconstruction of feasible various planes, curved surface or irregular tangent plane carries out the solid of anatomical structure or pathological changes easily and follows the trail of;
3) nuclear magnetic resonance belongs to no wound, no radiological survey X, has avoided image checks such as X line or radionuclide image by the damage due to the ray, and is harmless;
4) imaging parameters is many, comprises to contain much information, at present, kind surplus the known imaging parameters of nuclear magnetic resonance reaches ten is added the pulse train combination that surpasses hundred kinds, and many special Application of imaging technology, the imaging potentiality of nuclear magnetic resonance are very huge, for clinical practice provides wide research field; And
5) nuclear magnetic resonance has higher spatial resolution.
MR imaging apparatus is made up of magnet system, spectrometer system, the department of computer science graphical presentation system of unifying.Magnet system by main magnet, gradient coil, have a snack coil and form with the orthogonal radio-frequency coil of main field, be the main part that signal takes place and produces in magnetic resonance.
The head coil of typical MR imaging apparatus as shown in Figure 1, this head coil 30 is open head coils, comprises a base portion 32 and a top 34.These base portion 32 tops are provided with the semicircle cambered surface of depression; This top 34 is arcuation, and its inner surface also is designed to a semi-circular arc face to semicircle cambered surface that should base portion 32.This top 34 is the tops that are fixedly arranged on this base portion 32, and the semicircle cambered surface of two correspondences forms a ccontaining cavity 36, in order to ccontaining examine position, as head, cervical vertebra, knee etc.Many on the market at present MR imaging apparatus have all adopted head coil same as described above or similar, as the Signa OpenSpeed 0.7T of common therapy system (GE Medical Systems) production
TMDeng.
Though nuclear magnetic resonance has the ability that any direction is directly cut layer as previously mentioned, yet this any direction is directly cut layer and only is confined to a certain fixed position, so this adopts the defective of the MR imaging apparatus of above-mentioned head coil to be: when this examine position in this ccontaining cavity by support, cushion, air bag or vacuum bag fixing after, just can't do quantitative moving in any direction; Even on perpendicular to the direction of this ccontaining cavity, can do suitable position adjustment, but when this inspection need be in other certain location, do when cutting layer as the position after special angle is rotated at this examine position, just this kind adopts the MR imaging apparatus of above-mentioned head coil can't satisfy above-mentioned requirements.
At present promising on the market adaptation examine patient takes different gestures and the MR imaging apparatus that designs in checking process, the Upright that produces as U.S. FONAR company (FONAR Corporation)
TMMR imaging apparatus, this kind equipment can allow the examine patient to take sleeping position, sitting posture, stance or other postures to be checked for convenient the needs.Yet this kind equipment can't solve equally in the irremovable problem in fixing back, this examine patient's examine position.
(3) summary of the invention
A main purpose of the present invention is the rotation positioning device that is to provide a kind of MR imaging apparatus coil, in order to realize treating freely rotating of check point.
Another object of the present invention is the rotation positioning device that is to provide a kind of MR imaging apparatus coil, in order to the accurate location of realizing treating check point.
For achieving the above object, the present invention proposes a kind of rotation positioning device that is applied to the MR imaging apparatus coil, offer the ccontaining cavity at ccontaining examine position in this coil, it is characterized in that: this rotation positioning device also comprises a pad that can freely rotate in described accommodation space, and one first drive division and one first rotation section are set on this pad; One second drive division and one second rotation section are set on this coil; This first drive division and this second drive division constitute transmission and intermesh, and this first rotation section can be rotated with respect to this second rotation section under the driving of this first drive division and this second drive division.
Rotation positioning device of the present invention also further comprises retaining mechanism, and in order to lock this pad when this pad turns to desired location, described retaining mechanism may be selected to be lock screw or spring ball slfactuating latch.
The first above-mentioned drive division and second drive division can be selected the suitable kind of drive respectively, and as rack and pinion, first rotation section and second rotation section can be chosen as sliding tray and guide rail, perhaps sliding pin and gathering sill respectively.Wherein, this sliding tray can be sheathed on this guide rail and along its slip, and perhaps this sliding pin can insert in this gathering sill and along its slip; Can drive this second drive division by manual or connection external drive source, and then drive this first drive division, rotate by this first rotation section and cooperatively interacting of second rotation section thereby drive this pad.Simultaneously, can carry out the accurate control of quantitative rotational angle or stroke to the rotation of above-mentioned pad by the isoparametric reasonable disposition of position, size to this first drive division and second drive division.
In sum, the rotation positioning device of MR imaging apparatus coil provided by the present invention realizes treating freely rotating and accurately locating of check point, thereby solved when this examine position in this ccontaining cavity by support, cushion, air bag or vacuum bag fixing after, just can't do quantitative mobile problem in any direction, satisfied when the coil needs of this MR imaging apparatus other certain location the requirement of checking as the position of rotating behind the special angle at this examine position.
(4) description of drawings
Fig. 1 is the sketch map of the MR imaging apparatus head coil of prior art.
Fig. 2 is the sketch map of the rotation positioning device preferred embodiment of MR imaging apparatus coil of the present invention.
Fig. 3 is the enlarged drawing of III part among Fig. 2.
Fig. 4 is the sketch map of another preferred embodiment of rotation positioning device of MR imaging apparatus coil of the present invention.
Fig. 5 is the enlarged drawing of V part among Fig. 4.
Fig. 6 is the sketch map of the another preferred embodiment of rotation positioning device of MR imaging apparatus coil of the present invention.
Fig. 7 is the external drive sketch map of the rotation positioning device of MR imaging apparatus coil of the present invention.
Fig. 8 is the imaging effect figure of the rotation positioning device of MR imaging apparatus coil of the present invention.
(5) specific embodiment
Describe the present invention below in conjunction with accompanying drawing.
The rotation positioning device of MR imaging apparatus coil of the present invention is arranged on the coil of a MR imaging apparatus, in order to realize treating freely rotating and accurately locating of check point.The present invention can be widely used on the various coils of MR imaging apparatus, in this preferred embodiment and embodiment subsequently, be example only to be applied to head coil, but not as limit, can understand ground as those of ordinary skills, the identical or similar device of the rotation positioning device with MR imaging apparatus coil of the present invention that is applied to other coils is all within the scope that the present invention is contained.
See also Fig. 2, a head coil 30 comprises a base portion 32 and a top 34, and this top 34 is fixedly arranged on this base portion 32, is appreciated that ground, and this base portion 32 and top 34 also can be structure as a whole.This base portion 32 upper surfaces form the semicircle cambered surface of a depression, and this top 34 is arcuation, and it also forms a semi-circular arc face to semicircle cambered surface that should base portion 32.After this top 34 is fixedly arranged on this base portion 32, form a ccontaining cavity 36 between this two corresponding semicircle cambered surface, in order to ccontaining examine position, as head, cervical vertebra, knee etc.
The pad 40 of one arcuation is arranged in this ccontaining cavity 36, and can freely rotate along the internal face of this ccontaining cavity 36.One end face of this pad 40 extends suitable distance laterally to form one first drive division 42 along its edge.In this preferred embodiment, this first drive division 42 is chosen as tooth bar.This first drive division 42 can be integrally formed on this pad 40 as mentioned above, also can for element independently by locking part, as screw etc., be locked in the outside, end of pad 40.On the base portion 32 that this one second drive division 50 is arranged at this head coil 30 and the end face end face in the same way of described pad 40, and be meshed, to drive this first drive division 42 with this first drive division 42.In this preferred embodiment, this second drive division 50 is chosen as gear.The tooth radius of described rack and pinion, the number of teeth and tooth pitch can the reasonably configurations according to being applied to different coils.One first rotation section 44 is set on this first drive division 42.In this preferred embodiment, this first rotation section 44 can be chosen as an arcuation sliding tray, and this sliding tray runs through this first drive division 42 along the outer wall of this pad 40.One second rotation section 38 is arranged on the described end face of base portion 32 of this head coil 30, and in like manner, this second rotation section 38 also can be selected to be integrally formed on the described end face of this base portion 32 or be locked on the described end face.In this preferred embodiment, this second rotation section 38 is chosen as a guide rail that matches with these first rotation section, 44 shapes, and described sliding tray is sheathed on this guide rail and can slides along it.Thereby cooperating with this second rotation section 38 to rotate, this first rotation section 44 make this pad 40 rotate along the inwall of this ccontaining cavity 36.This first drive division 42 matches with this second drive division 50 driving this first rotation section 44 and this second rotation section 38, and the reasonable disposition by for example above-mentioned tooth radius, the number of teeth and tooth pitch is with rotational angle or the stroke of this first rotation section 44 of accurate control with respect to this second rotation section 38.
The present invention further comprise retaining mechanism in order to when this first rotation section 44 turns to desired location with respect to this second rotation section 38 with this its locking.Please consult Fig. 3 simultaneously, described retaining mechanism can be chosen as lock screw 60.Offer a locking hole 46 on this first rotation section 44, this lock screw 60 passes this locking hole 46 and is resisted against on this second rotation section 38, thereby this first rotation section 44 is lock onto on this second rotation section 38.
Please consult Fig. 4 and Fig. 5 simultaneously, in another preferred embodiment of the present invention, described retaining mechanism also can be chosen as the spring ball slfactuating latch.As shown in the figure, offering a containing hole 48, one springs 70 and a ball 80 on this first rotation section 44 is installed in this containing hole 48 successively.These 38 surfaces, second rotation section are provided with some location depression 39, and this ball 80 can be positioned in a certain location depression 39 under the resilient force of this spring 70, thereby this first rotation section 44 is lock onto on this second rotation section 38.When this first rotation section 44 was activated, this ball 80 can slide along described some location depression 39 surfaces, stops to drive when sliding into desired location, and this ball 80 can be positioned in the corresponding location depression 39.The radius of this ball 80 and 39 distances of location depression can the reasonably configurations according to being applied to different coils.
See also Fig. 6, in another preferred embodiment of the present invention, described first rotation section also can be chosen as a sliding pin 44 '.This sliding pin 44 ' is fixed on this first drive division 42.Described second rotation section can corresponding selection be the gathering sill 38 ' of an arcuation.This sliding pin 44 ' inserts in this gathering sill 38 ' and can be free to slide in it, thereby makes this pad 40 rotate along the internal face of this accommodation space 36.Match with this second drive division 50 by this first drive division 42 and in this gathering sill 38 ', to slide, and the reasonable disposition by described first drive division 42 for example and tooth radius, the number of teeth and the tooth pitch of this second drive division 50 is with rotational angle or the stroke of this sliding pin 44 ' of accurate control with respect to this gathering sill 38 ' to drive this sliding pin 44 '.When this sliding pin 44 ' slides into desired location, can be by above-mentioned retaining mechanism with these pad 40 lockings.
External drive to this first drive division 42 and this second drive division 50 can be chosen as manually, air motor, hydraulic motor and clockwork spring etc.See also Fig. 7, in this preferred embodiment, external drive can be by shaking the driving that realizes this first drive division 42 and this second drive division 50 to 90 on the other hand.This hand crank 90 is arranged on this second drive division 50, can drive this second drive division 50 by shaking this hand crank 90, thereby drive this first drive division 42, and then drive this pad 40 and rotate by the cooperation of this first rotation section 44 and second rotation section 38.
When using application MR imaging apparatus of the present invention to check, the examine position can be placed in this ccontaining cavity 36 and also fill up on this pad 40, fix this examine position by support, cushion, air bag or vacuum bag.When needing that in checking process this examine position rotated suitable angle, start above-mentioned external drive, by of the quantitative driving control of this first drive division 42 with this second drive division 50, this pad 40 can be turned to the desired position by this first rotation section 44 and cooperating of this second rotation section 38 again, thereby this examine position is turned to the desired position, by described retaining mechanism this pad 40 is locked at last.Therefore, just can realize treating freely rotating of check point and accurate location, use and use MR imaging apparatus of the present invention and treat check point and carry out design sketch that different angles check as shown in Figure 8 by the present invention.
Claims (20)
1. rotation positioning device that is applied to the MR imaging apparatus coil, offer the ccontaining cavity at ccontaining examine position in this coil, it is characterized in that: this rotation positioning device also comprises a pad that can freely rotate in described accommodation space, and one first drive division and one first rotation section are set on this pad; One second drive division and one second rotation section are set on this coil; This first drive division and this second drive division constitute transmission, and this first rotation section can be rotated with respect to this second rotation section under the driving of this transmission.
2. rotation positioning device according to claim 1 is characterized in that: this rotation positioning device further comprises retaining mechanism, in order to lock this pad when this pad turns to desired location.
3. rotation positioning device according to claim 1 is characterized in that: described coil is a head coil.
4. rotation positioning device according to claim 1 is characterized in that: described pad is arcuation, in order to carry this examine position.
5. rotation positioning device according to claim 1 is characterized in that: described first drive division is a tooth bar.
6. rotation positioning device according to claim 5 is characterized in that: described second drive division is a gear.
7. rotation positioning device according to claim 1 is characterized in that: described first rotation section is a sliding tray.
8. rotation positioning device according to claim 7 is characterized in that: described sliding tray is along this first drive division setting.
9. rotation positioning device according to claim 7 is characterized in that: described second rotation section is a guide rail.
10. rotation positioning device according to claim 9 is characterized in that: described sliding tray is sheathed on this guide rail and can slides along it.
11. rotation positioning device according to claim 1 is characterized in that: described first rotation section is a sliding pin.
12. rotation positioning device according to claim 11 is characterized in that: described sliding pin is fixed on this first drive division.
13. rotation positioning device according to claim 11 is characterized in that: described second rotation section is a gathering sill.
14. rotation positioning device according to claim 13 is characterized in that: described sliding pin inserts in this gathering sill and can slide in it.
15. rotation positioning device according to claim 2 is characterized in that: described retaining mechanism is a lock screw, offers a locking hole on this first rotation section, and this lock screw passes this locking hole and is resisted against on this second rotation section.
16. rotation positioning device according to claim 2 is characterized in that: described retaining mechanism is the spring ball slfactuating latch.
17. rotation positioning device according to claim 16, it is characterized in that: described spring ball slfactuating latch is included in the containing hole of offering on this first rotation section, be installed in spring and ball in this containing hole successively, and the some location depression that is arranged at this surface, second rotation section, this ball can be positioned under the resilient force of this spring in the depression of described location.
18. rotation positioning device according to claim 1 is characterized in that: on described second drive division hand crank is set, drives this second drive division by shaking this hand crank, and then drive this first drive division.
19. rotation positioning device according to claim 1 is characterized in that: described second drive division connects external drive source, drives this second drive division by this external drive source, and then drives this first drive division.
20. rotation positioning device according to claim 19 is characterized in that: described external drive source is one of them person who is selected from air motor, hydraulic motor and clockwork spring.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100823804A CN100360083C (en) | 2004-12-31 | 2004-12-31 | Coil rotation positioning device of magnetic resonance imaging equipment |
| US11/323,668 US20060241393A1 (en) | 2004-12-31 | 2005-12-30 | Rotation positioning device for a coil of a magnetic resonance imaging apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100823804A CN100360083C (en) | 2004-12-31 | 2004-12-31 | Coil rotation positioning device of magnetic resonance imaging equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1799499A true CN1799499A (en) | 2006-07-12 |
| CN100360083C CN100360083C (en) | 2008-01-09 |
Family
ID=36809869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100823804A Active CN100360083C (en) | 2004-12-31 | 2004-12-31 | Coil rotation positioning device of magnetic resonance imaging equipment |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US20060241393A1 (en) |
| CN (1) | CN100360083C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106264528A (en) * | 2016-10-09 | 2017-01-04 | 深圳市安思科电子科技有限公司 | A kind of MR imaging apparatus for medical imaging |
| CN106814336A (en) * | 2015-11-27 | 2017-06-09 | 上海联影医疗科技有限公司 | A kind of radio frequency coil assemblies for magnetic resonance imaging |
| US20180235824A1 (en) * | 2017-02-17 | 2018-08-23 | Medtec, Inc. | Body part fixation device with pitch and/or roll adjustment |
| CN114264991A (en) * | 2021-11-26 | 2022-04-01 | 深圳市联影高端医疗装备创新研究院 | Mammary gland receiving coil assembly and magnetic resonance imaging equipment |
| CN114284025A (en) * | 2021-12-24 | 2022-04-05 | 深圳市联影高端医疗装备创新研究院 | Coil device |
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| US8256430B2 (en) | 2001-06-15 | 2012-09-04 | Monteris Medical, Inc. | Hyperthermia treatment and probe therefor |
| EP2745128A1 (en) | 2011-09-07 | 2014-06-25 | Koninklijke Philips N.V. | Mr receive coil platform with selective engagement between receive coil and patient table top |
| CN104602638B (en) | 2012-06-27 | 2017-12-19 | 曼特瑞斯医药有限责任公司 | System for influenceing to treat tissue |
| US10675113B2 (en) | 2014-03-18 | 2020-06-09 | Monteris Medical Corporation | Automated therapy of a three-dimensional tissue region |
| US9486170B2 (en) | 2014-03-18 | 2016-11-08 | Monteris Medical Corporation | Image-guided therapy of a tissue |
| US20150265353A1 (en) | 2014-03-18 | 2015-09-24 | Monteris Medical Corporation | Image-guided therapy of a tissue |
| US10327830B2 (en) | 2015-04-01 | 2019-06-25 | Monteris Medical Corporation | Cryotherapy, thermal therapy, temperature modulation therapy, and probe apparatus therefor |
| KR20160139811A (en) * | 2015-05-28 | 2016-12-07 | 삼성전자주식회사 | Head coil and magnetic resonance apparatus employing the same |
| CN114424078A (en) | 2019-09-20 | 2022-04-29 | 皇家飞利浦有限公司 | Damping mechanism, RF coil device and MRI apparatus |
| US11408951B2 (en) * | 2020-04-24 | 2022-08-09 | MR CoilTech Limited | Open-face, dual-mode head coil for clinical imaging in ultra-high field MRI scanner |
| CN113552512B (en) * | 2021-07-26 | 2022-10-25 | 山东大学 | Rotating device for nuclear magnetic resonance equipment |
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| US5085219A (en) * | 1987-10-30 | 1992-02-04 | The Regents Of The University Of California | Adjustable holders for magnetic reasonance imaging rf surface coil |
| US5007425A (en) * | 1988-08-19 | 1991-04-16 | Picker International, Inc. | Patient and coil support structure for magnetic resonance imagers |
| US6697659B1 (en) * | 1991-12-04 | 2004-02-24 | Bonutti 2003 Trust-A | Method of imaging a joint in a body of patient |
| US5388580A (en) * | 1992-08-19 | 1995-02-14 | The United States Of America As Represented By The Department Of Health And Human Services | Head holder for magnetic resonance imaging/spectroscopy system |
| JPH07194569A (en) * | 1994-01-11 | 1995-08-01 | Toshiba Medical Eng Co Ltd | Knee joint fixing tool for mri |
| JP3510344B2 (en) * | 1994-09-01 | 2004-03-29 | ジーイー横河メディカルシステム株式会社 | Head coil and head coil mounting method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106814336A (en) * | 2015-11-27 | 2017-06-09 | 上海联影医疗科技有限公司 | A kind of radio frequency coil assemblies for magnetic resonance imaging |
| CN106814336B (en) * | 2015-11-27 | 2020-06-26 | 上海联影医疗科技有限公司 | Radio frequency coil assembly for magnetic resonance imaging |
| CN106264528A (en) * | 2016-10-09 | 2017-01-04 | 深圳市安思科电子科技有限公司 | A kind of MR imaging apparatus for medical imaging |
| US20180235824A1 (en) * | 2017-02-17 | 2018-08-23 | Medtec, Inc. | Body part fixation device with pitch and/or roll adjustment |
| US11679053B2 (en) * | 2017-02-17 | 2023-06-20 | Medtec Llc | Body part fixation device with pitch and/or roll adjustment |
| CN114264991A (en) * | 2021-11-26 | 2022-04-01 | 深圳市联影高端医疗装备创新研究院 | Mammary gland receiving coil assembly and magnetic resonance imaging equipment |
| CN114284025A (en) * | 2021-12-24 | 2022-04-05 | 深圳市联影高端医疗装备创新研究院 | Coil device |
| CN114284025B (en) * | 2021-12-24 | 2024-04-16 | 深圳市联影高端医疗装备创新研究院 | Coil device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100360083C (en) | 2008-01-09 |
| US20060241393A1 (en) | 2006-10-26 |
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